1. The dawn of the dead (I prefer Z. Snyder 2004 version, sorry Romero).
2. The day of the dead
3. 28 days later
4. REC (but the spanish version please!! seriously, the original is soooo much better than the remake).
5. If deadites count… Evil death (particularly the 3rd, which stands amongst one my favourite films ever).
6. Return of the living dead
7. Re-animator
8. Ghosts of Mars works as a Zombie film in some manner, and I kinda liked it
Then sure, the walking dead (speacially seasons 4 & 5 were too good! and dead set)

Every species of ant has its own species of zombi fungi that it gets infected by.